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Lithium-sulfur battery with lithium polysulfide catholyte
Lithium-sulfur battery with lithium polysulfide catholyte
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机译:带有多硫化锂阴极电解液的锂硫电池
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摘要
A liquid catholyte for a Li—S battery comprises a non-aqueous solution of at least one lithium polysulfide of formula Li2Sx (wherein x is selected from 4, 6, and 8) and an anion receptor compound capable of complexing with polysulfide anion. The non-aqueous solution typically is composed of the Li2Sx and the anion receptor compound dissolved in a non-aqueous solvent (e.g., one or more organic ether or fluorinated ether solvents). The anion receptor compound typically is present in the catholyte at a concentration of about 0.1 M to about 4 M. Li—S batteries comprise a metallic lithium anode; a porous conductive substrate; a separator membrane between the anode and the porous conductive substrate; and the liquid catholyte composition within pores of the substrate.
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机译:用于Li-S电池的液体阴极电解液包括至少一种式Li 2 Sub> S x Sub>的多硫化锂的非水溶液(其中x选自4、6和8)和能够与多硫化物阴离子络合的阴离子受体化合物。非水溶液通常由Li 2 Sub> S x Sub>和溶解在非水溶剂(例如一种或多种有机醚或氟化物中)中的阴离子受体化合物组成。醚溶剂)。阴离子受体化合物通常以约0.1M至约4M的浓度存在于阴极电解液中。多孔导电基材;阳极和多孔导电基材之间的隔离膜;以及在基质的孔内的液体阴极电解质组合物。
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